Authors: Brian Kernighan
Paperback: 197 pages
Publisher: Amazon (Oct 2019)
A newer, personal, history from one of Unix's authors.
Amazon says: The fascinating story of how Unix began and how it took over the world. Brian Kernighan was a member of the original group of Unix developers, the creator of several fundamental Unix programs, and the co-author of classic books like “The C Programming Language” and “The Unix Programming Environment.
The author's page has some additional comments and errata. line.